Macro lenses are generally pretty expensive, and buying an attachment for your iPhone's camera isn't going to be cheap either. The good news? You can get yourself some macro photos by just placing a drop of water on your iPhone camera's lens.

There are some obvious downsides: the water drop isn't going to stay in place if you move your camera around and you're putting water on an expensive piece of technology. Getting that out of the way, the folks over at Tested figured out a pretty cool trick for obtaining free macro photos with your phone. Here's how it works:

Applying a drop of water was extremely simple, and I just had to flip the phone over quickly to avoid the water sliding off the lens ring. Like Wild, I found that a larger drop of water yielded better results—not just higher magnification, but better centering as well—and photos were best when both the iPhone and subject were held still on stable platforms. One commenter noted that using glycerine instead of water also works, since the substance is more viscous and therefore easier to control. But you can't get that from the sink!

The results are impressive. For a closer look at this neat photography experiment and detailed instructions, hit up the full post over at Tested or check out this video for a demo.